Integral Ad Science vs Zefr:Which is more popular?
In September 2026, Integral Ad Science had more branded searches than Zefr among brand safety platforms worldwide. Integral Ad Science had about 3,600 branded searches, while Zefr had 2,400. Integral Ad Science made up 14.1% of all brand safety platform searches we track, and Zefr accounted for 9.4%. When we asked ChatGPT and Google AI Overviews about brand safety platforms, Integral Ad Science appeared in all five answers and Zefr in four. Integral Ad Science was mentioned before Zefr in every answer.
Who do people search for more?
Integral Ad Science, about 50% more searches than Zefr
Who does AI mention more?
Integral Ad Science, mentioned in every answer we collected
Who does AI recommend more?
Integral Ad Science, named ahead of Zefr in every answer
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Top brand safety platforms in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Integral Ad Science appeared in all five answers. Zefr was mentioned in four out of five: in all three ChatGPT answers and in one of the two Google AI Overviews. Integral Ad Science was listed before Zefr in every answer.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
- Integral Ad Science1st
DoubleVerify2nd
Zefr3rd
HUMAN Security4th
Channel Factory5th
Pixalate6th
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Integral Ad Science5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- DoubleVerify4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Zefr4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- HUMAN Security2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Channel Factory2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Pixalate1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about brand safety platforms
5 answers
Asked ChatGPT
“Which brand safety platform should I use?”
Asked ChatGPT
“What are the best brand safety platforms?”
Asked ChatGPT
“What's the best brand safety platform for ad placement checks?”
Searched Google, AI Overview
“brand safety platforms”
Searched Google, AI Overview
“brand safety tool”
Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.
Is Integral Ad Science or Zefr more popular in search?
This chart shows how often people search Google for Integral Ad Science and Zefr by name. Each line represents a brand's share of searches for all six brand safety platforms we track, month by month, from English-language searches worldwide.
Share of searches by month for Integral Ad Science, Zefr. The figures are in the table below the chart.
View monthly share of searches table
| Month | DoubleVerify | HUMAN Security | Channel Factory | Integral Ad Science | Zefr | Pixalate |
|---|---|---|---|---|---|---|
| Oct 2025 | 33.1% | 22.2% | 12.1% | 18.1% | 7.9% | 6.6% |
| Nov 2025 | 30.8% | 25.3% | 13.7% | 16.8% | 7.5% | 5.9% |
| Dec 2025 | 32.6% | 21.8% | 11.7% | 17.7% | 9.7% | 6.4% |
| Jan 2026 | 31.8% | 21.2% | 14.1% | 17.4% | 9.3% | 6.1% |
| Feb 2026 | 32.3% | 21.6% | 14.4% | 17.6% | 7.8% | 6.2% |
| Mar 2026 | 31.8% | 21.2% | 14.1% | 17.4% | 9.3% | 6.1% |
| Apr 2026 | 32.3% | 21.6% | 14.4% | 17.6% | 7.8% | 6.2% |
| May 2026 | 34.7% | 23.2% | 12.6% | 15.4% | 8.4% | 5.6% |
| Jun 2026 | 36.3% | 19.8% | 13.2% | 16.1% | 8.8% | 5.9% |
| Jul 2026 | 36.3% | 19.8% | 13.2% | 16.1% | 8.8% | 5.9% |
| Aug 2026 | 45.9% | 20.5% | 9% | 13.7% | 5.9% | 5% |
| Sep 2026 | 31.6% | 25.8% | 14.1% | 14.1% | 9.4% | 5.1% |
How has the Integral Ad Science and Zefr comparison changed over the last 12 months?
3 findings
- Integral Ad Science was ahead of Zefr in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Integral Ad Science’s share of searches among brand safety platforms worldwide moved from 18.1% to 14.1%, and its estimated monthly branded searches moved from 6.6K to 3.6K.
- Across the 12 months ending September 2026, Zefr’s share of searches among brand safety platforms worldwide moved from 7.9% to 9.4%, and its estimated monthly branded searches moved from 2.9K to 2.4K.
How did search popularity change for brand safety platforms worldwide in September 2026?
3 changes
In September 2026, Channel Factory overtook Integral Ad Science to rank 3rd among brand safety platforms worldwide, with 14.1% of the searches.
In September 2026, Zefr gained share of searches among brand safety platforms worldwide, from 5.9% to 9.4%.
Estimated monthly branded searches for Integral Ad Science worldwide fell 45.5% over 12 measured months, from 6.6K to 3.6K in September 2026.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Integral Ad Science’s and Zefr’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
Integral Ad Science
1 branded search term
- integral ad science
Zefr
1 branded search term
- zefr
Other head-to-heads among brand safety platforms
- DoubleVerify vs HUMAN Security: compare popularity
- DoubleVerify vs Channel Factory: compare popularity
- DoubleVerify vs Integral Ad Science: compare popularity
- DoubleVerify vs Zefr: compare popularity
- HUMAN Security vs Channel Factory: compare popularity
- HUMAN Security vs Integral Ad Science: compare popularity
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